Turbine.



' O. BANNER.

TURBIE.

APPLICATION FILED DBO. 27, 1911.

1,090,442. Patented Mar. 17,1914.

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' UNITED STATES PATENT orme` OTTO BANNER, or EASTON, PENNSYLVANIA,AssIGNoE To INGERSOLLEAND com- PANY, or NEW YORK, N. Y., A CORPORATIONor NEW JERSEY.

TURBINE.

Application mea :December a?, 1911. serial No. 668,034.

To all whomfz't may concern Be it known that I, OTTO BANNER, a subjectof the German Emperor, and resident of Easton, in thecounty ofNorthampton and State ofPennsylvania, have invented a new and usefulImprovement in Turbine-Engines, of which the following is a specifica-ltion.

This invention consists of a double flow mixed pressure turbine engineof the socalled action or velocity type, the-parts .being so ,arrangedthat intermediate high and low pressure inlets and two outlets areprovided, the high pressure element bein located in the low pressureinlet chamber intermediate the two oppositely arranged low pressurelelements.

A practical embodiment of this invention is represented in theaccompanying drawings, in which- Figure lis a view of the turbine enginehalf in side elevation and half in longitudinal central verticalsection, a high pressure blade wheel being shown with one row of bladescarried thereby, and Fig. 2 is a detail section showing the highpressure blade wheel having two rows of blades carried thereby with aninterposed row of fixed blades carried by the casing. r

Theengine shaft is denoted by 1,-the blad wheel of the high pressureelement by 2, its blades by 3; the blade wheels ofthe two low pressureelements by 4 and -their rows of blades by 5. The casing is provided `atits ends with chambers 6, 7, communicating with the outlets 8, 9. Thesechambers and outlets are herein shown as provided in end members of thecasing divided in' a horizontal plane co-incident with the axis of theshaft l into upper and lower half sections 10, 11, and 12, 13. Inside ofthe end mern bers of the casing are located the cylindrical memberswhich are also shown as divided in a horizontal plane co-incident withthe axis of the shaft 1 into upper and lower half sections 14,15, and16, 17, respectively. A

ring member is interposed'between the two cylindrical members of thecasing, which ring member is also shown as divided in a horizontal planeco-incident with the axis of the shaft 1 into upper and lower halfsections 18, 19. It is to be understood that these different members andsections are to be bolted or otherwise secured together to form a rigidwhole surrounding the shaft 1.

The blade wheel 2 of the high pressure element is located within thechamber 20 communicating with the lower pressure inlet 21. The motivefluid within this chamber 20 1s caused to pass inv opposite directionsoutwardly through the two low pressure elements into the outlet chambers6, 7.

. A high pressure chamber 22 is provided in a connection 23 carried bythe upper half section 18of the intermediate ring member 13, 1t), whichhigh pressure inlet chamber is prov1ded with a .nozzle or nozzles 24fordirectlng themotive fluid against the row of blades 3 of thehighpressure wheel 2. This high pressure motive fluid after exerting itsforce upon the high pressure wheel mixes with the low pressure motivefluid and passes outwardly in opposite directions through the lowpressure elements into the outlet chambers 6 and 47'.

In Fig. 2 I have shown the high pressure wheel 2 as provided with tworows of blades 25, 26, and the casing as provided with an interposedsingle row of fixed blades 27.

The partitions of the low pressure elements are denoted by 28 and theirnozzles by 29. I The bearings for the shaft 1 at the opposite ends ofthe casing are preferably divided in a horizontal plane coincident withthe axis of the shaft 1 to form upper and lower half sections 30, 31,and 32, 33, respectively.

The lower half sections 11 and 13 of the end members of thecasing may beprovided with brackets 34, 35, for use in supporting the engine.

While I have shown the high pressure blade wheel as having agreater'blade diameter than that of the low pressure blade wheels andhave shown it as having only a single row of blades, still itis to beunderstood that I do not wish to limit myself to this construction asthe blading of the high pressure wheel may have a diameter equal to orless than the blading 'of the low pressure wheels and may have anynumber of rowsof blades as may be desired. I have also shown the turbineengine as having four stages upon each side of the motive fluid inlet inthe low pressure elementsand the wheels as having single rows of bladesbut the number of stages and the number of rows of blades may be variedas desired without departing from the scope of my invention.

It will be seen that in an engine of the character herein shown anddescribed, the shaft may be driven either by the high pressure alone orby thelow pressure or by a combination of the two according tothe workrequired.

What I claim is l. A mixed pressure turbine engine including a casingdivided transversely vertically into end members containing the outletchambers for the lowcpressure elements, cylindrical members containingthe low pressure elements, and an intermediate ring member containingthe high pressure element and low pressure inlet'chamber.

Q. A mixed pressure turbine engine including a casing dividedhorizontally into upper and lower half sections and transverselyvertically into end members containing the outlet chamber for the lowpressure elements, cylindrical members containing the low pressureelements and an intermediate ring member containing' the high pressureelement and low pressure inlet chamber.

In testimony, that I claim the foregoing as my invention, I have signedmy name in presence of two witnesses, this 23d day of Dec. 1911.

OTTO BANNER. Witnesses EDWARD N. DIETRICH, CHARLES FRUTCHEY.

